Used as a key intermediate in the synthesis of pharmaceutical agents, particularly in the development of protease inhibitors. Its chiral structure and functional groups make it valuable for constructing biologically active molecules, especially those targeting enzymes involved in viral replication or metabolic disorders. Commonly employed in the preparation of renin and HIV protease inhibitors due to its ability to mimic peptide bonds and interact selectively with enzyme active sites. Also utilized in asymmetric synthesis to introduce stereochemical control in complex drug molecules.